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A random sample of 40 adults with no children under the age of 18 years results in a mean daily leisure time of 5.09 hours, with a standard deviation of 2.47 hours. A random sample of 40 adults with children under the age of 18 results in a mean daily leisure time of 4.15 hours, with a standard deviation of 1.69 hours. Construct and interpret a 95% confidence interval for the mean difference in leisure time between adults with no children and adults with children left parenthesis mu 1 minus mu 2 right parenthesis(μ1-μ2).
Let μ1 represent the mean leisure hours of adults with no children under the age of 18 and μ2 represent the mean leisure hours of adults with children under the age of 18.The 95%confidence interval for left parenthesis mu 1 minus mu 2 right parenthesis(μ1-μ2)is the range from () hours to () hours.
Medical Malpractice - An important issue facing Americans is the large number of medical malpractice lawsuits and the expenses that they generate.
a below are the numbers of deaths from tornados in the u.s. from 1990 through 2000.53 39 39 33 69 30 25 67 130 94
given a 90 confidence interval for mu1-mu2 as -55. what can be concluded?a nothingb mu1mu2c mu1 -5 or 5 and mu2 10 or
Test for significant differences among weight losses for the five diets, and perform all pair wise comparisons using:
A study of 20 worldwide financial institutions shows the correlation between their assets and pretax profit to be .86. At the .05 significant levels, can we conclude that there is positive correlation in the population?
a street has 30 street lights in a row. if 8 of the street lights are damage and you are going to replace them and dont
A teacher gives a pre and post test to her students, she wants to know if there is a difference in the number of points students earned on their pretest and post test.
Assume a random sample of 16 gasoline stations is selected and their mean cost for regular gasoline is computed. What is the standard error of the mean in this experiment?
Your firm has a contract to make 2000 staff uniforms for a fast -food retailer. The heights of the staff are normally distributed with a mean of 70 inches and a standard deviation of 3 inches. What percentage of uniforms will have to fit staff sho..
1. assume that event a occurs with probability 0.4 and event b occurs with probability 0.5. assume that a and b are
What are the correlation coefficients of the X variables (non-transformed) against the Y? Do they agree with your opinion about the best fit?
The length of time recorded is normally distributed with a mean of 184 seconds and a standard deviation of 55 seconds. What is the probability that and individual will be able to keep eye contact longer than 239 seconds?
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